Question about lossless Encoding

[|SeNsUi|]

Hi. I have a question about lossless encoding. Using a avs script loaded in vdub and codec lagarith for a lossless encode. Is it good to apply all the filters when doing lossless? eg fft3d and limitedsharpenfaster. I am doing a anime DVD encode.

[LoRd_MuldeR]

As soon as you apply filters, this won't be "true" lossless any more. Obviously!

Of course if you are going to apply these filters anyway before you do the final encode, then it may make sense to apply the filters in this step.

Denoisng will probably make the "lossless" file smaller. Just be aware that it won't be identical to the source any more!

[|SeNsUi|]

Thanks for info this way it decreases the time to encode both passes using megui.

[LoRd_MuldeR]

Thanks for info this way it decreases the time to encode both passes using megui.

In that case it makes sense to apply the filter to the "lossless" intermediate video file, because then the filters need to be applied only once instead of re-applying them for every encoding pass. At least for "slow" filters this will save you some processing time. Of course there is no reason to do this with "fast" filters, because encoding/decoding to/from the lossless intermediate format adds some overhead. Only if your filters are slow enough to "hide" that additional overhead, encoding to a lossless intermediate file will save you processing time...